Flexible conduit for bolters



C. E.'MINER.

FLEXIBLE CONDUIT FOR BOLTERS. "f APPLICATION FILED JUNE], 1920.

1,407,21 1, Patented Feb; 21, 1922.

2 SHEETS-SHEET 1.

' W 2 W 1 T c. E. MINER. FLEXIBLE CONDUlT FOR BOLTERS.

3] m uewtoz 0,2. Miner Witmeoo I I Toall whom it mag camera:

V un 'rsn STATES PA ENT oFF cE.

E. cnooxs, or coNcoRnIA, KANSAS. 1

- FLEXIBLE connurr FOR BoL'rERs l, 1 a

Specification of Letters Patent.

Application filed June 1, 1920. -Serial is. 385,805." i

Be it known that I, CLARENCE E. MINER, a citizen of the United States, residingat Concordia, in the county ofCloud and State of Kansas, have invented certainnew and useful Improvements in FleXible Conduits forv Bolters; and I do declare the following to be a full, clear, and exact description of the:

invention, such as will enable others skilled in the art to which it appertains to-Inake anduse the same. y w

This, invention relates to improvements in conduits forbolters and the like.

- It .is customary at this time to employ fabric sleeves known as stockings for the. purposepf conducting flour and other ram ular material froma suitable source of supk plyto a horizontally rotating or gyrating sifter box and from the latter to a suitable place. of deposit. These stockings are-subject to great wear and tear due to the various movements of the sifter box. Consequently, they do not lastlong and must necessarily. be repaired as soon as they are damaged. To do this it is necessary to stop the machine whenever one of the stockings becomes damaged. This is, of course, very obj ectionable in view of the fact that it wastes much, time and is an expensiveprocedure because. more power is required in starting the machine than is required after the machine is running regular. 'Tearing of these stockings is not an infrequent occurrence, and: I have oftentimes had from sixto eight stockings destroyed before getting the bolter working properly.

It is my intention and the obiect of this inve'ntionto overcome'the above mentioned circumstancesby providing a new kind'of a conduit. I do not intend to do away with the stockings, but it is my idea to use relatively short stockings, thus decreasing the amount of material required and connect these stockings to a longitudinally extensible member which type of conduit will take care of all the various movements of'the,

bolter and will notdamag'e the stockings. This conduit also includes springs which resistfextension of said member and at the same time hold the stocking taut so. as'to prevent it from twisting and obstructing the passage of the material therethrough, as it ordinarily does. V V

Another object of the invention is to provide'a conduitef the above mentioned type PatentedFeb. 21,

in which the extensibleimemberiis free from? friction; one in which p'ackingis employed,

which prevents all possibility of leakage of.

the material from the" conduit; and one which is strongfdurable,highlyefiective use. and .yet inexpensive to both the'manu facturer and theinsen U Other objects and advantages the invention; will be, apparent during the Course i v i of the followin'g descriptionz.

In the accompanying drawings forming a part of this specification and in which like numerals are employed .to designate 1i .ke parts throughout thesame: t Figure 1 is an} 'elevationa1 view of a con;

ventional type of Sifter box-equippedwitlr conduits constructed iniaccordan'ce with my invention. j M f Fig. 2-is an enlarged 'elevational viewjoff the type of conduitwhich is connected to the discharge opening 'ofthe'boflter.

Fig. 3 is a top lan view thereof, the stock-f ing being shown in section;

ig. 4 is a centrallongitudinal vertical:- section taken'on the line'el-fi of. Fig. 2.

Fig. 5 is an elevationalview of the type of conduit connected to: the feed opening of the sifter box. v I i Fig. 6 is a central vertical longitudinal section thereof.

so i

Fig. 7 is a horizontalsectional View taken;

direction of the arrows. v

' In the drawings, whereinffor the purpose; of illustration is shown a' preferred embodiat relatively short fabric stocking which is connected at one of itslendsto a longitudi 9. merit of myi nvention, the numeral' l desigg In carrying out my'invention I-employ nallyl extensible tubular 'Inemhen'the' o i' I site end, ofthe 'latterfand the fopposite end of the stocking being'adapted to be'connect; ed over' the inlet 'ordij'scharge o enings "of the Sifter box. h f j Referring to the drawings it willbe S en: that v the numeral 3 designates, as a whole, a

conduit constructed in accordance with my invention. As beforestated, this conduit is made up of a relatively short fabric stock ing 4 which is connected at one of its ends to a longitudinally extensible member, the latter being madeup of tubular members 5 and .6, the former fitting into the latter in the manner shown. In addition to this the member 5 is provided witha laterally extending flange 7 which in turn carries a depending collar 8' spaced away from the member 6. Disposed between the collar 8 and member '5' and bearing against the flange 7 is a suitable packing ring 9, against which one end of the member 6 abuts. if desired the lastnamed member maybe provided with a hand-hole 10'by means of which access may be had to the interior of the condu'itf for cleaning thesame if found necessary. It has been before intimated that I make use of two different types; of conduits,

that is, I employ one type for connection to the feed opening, and another type for connection to the outlet opening. The constructionaldifferences between these two forms is'extreme'ly slightand resides only in the manner-of size and the manner of arrangement of the coil springs 11. In the form shown in Fig. 2, one end of the coil springs is connected to thesection 5 while the other end'is connected'to'the section 6 of the extensible member. It may be well to state at this point, that the function of these springs 11 is to resist extension of the members 5 and 6, and also to hold the stocking 4 taut. In the form of the invention shown in Fig. 5, one of the ends of the, coil springs 11 is connected to the member 5 while the other end is connected to the top of the bolter 1. The stocking 4 may be connected to the member 5 in any suitable way,'such as for instance by providing the latter with an internal bead 12 which forms a channel into which the stocking is seated and held against displacementby'means of a piece of wire or cord 13. i

Itis well known that when the bolter is] started, its movements are extreme and irregular and it is at this time that the stockings are, subject to the greatest strains. On the other hand, after the machine has been running for a while, its movements are regular and there is less liability of injury to the stockings. With the type of conduit that I employ, it will be seen that when the ma chine is first started, the horizontal movements thereof will be compensated by the stocking 4, and the vertical movements caused .by the .upward pull of the machine, will be compensated by the longitudinally extensible member composed of the telescopic tubes 5 and 6. As soon as the machine begins to run more smoothly the springs 11 which were under tension will resume their normal state and in so doing will cause the stocking 4 to become taut. This is a feature to be emphasized because of the fact that theflour may easily pass through the stockings and will not be obstructed, V of such a length that they become twisted and wrinkled, especially when the machine Ordinarily, these stockings are is running at its normal speed, consequently, thesize of the discharge through which the flour must pass is decreased, and ofttimes it is closed. With my construction these circumstances are overcome in the manner above set forth. I

I am aware of the fact that various types of conduits have been patented to overcome circumstances which my device is intended to overcome, but I do'not know of any device wherein fabric stockings and a metallic extensible member is employed to form a conduit. I believe this construction to be new and novel. It may be well mentioned here that my conduits'have been actually used for some little time, and have'proven to be entirely successful. In fact, by their use, unexpected results have been obtained In addition to the foregoing advantages is to be noted that my de'vice will be found extremely advantageous in view of the'fact that all possibility of leakage of the material through the conduit is overcome by employment of suitable packing material. This feature will be found extremely advantageous in view of the fact that it prevents the material from dropping on the floor and top of the belter, thus rendering the machine entirely sanitary. My device may be manufactured at an extremely low cost and may also be sold at a low price, and it is so simple in construc tion that it may be easily and readily installed by inexperienced persons. By close examination the construction of the extensie ble member will be seen that the slidable sections thereof are spaced from each other so as to prevent friction.

'Careful consideration of the foregoing description taken in conjunction with the accompanying drawings willaenable persons skilled in the art to which this invention appertains to obtain aclear understanding of'the same; therefore, further descriptionis deemed unnecessary. V

It is to be understood that the form of the invention herein shown and described is to be taken as a preferred form of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims.

I claim: i

1. A conduit for bolters comprising a relatively short fabric stocking, an extensible tubular member, to one end of which the stocking is connected, the opposite end of said stocking being designed to be connected with an inlet or discharge opening in the sifter box, and yieldable means connected with the sections of said extensible member to resist longitudinal extension of the latter, said yieldable means serving also to render the aforesaid stocking taut.

2. A conduit for bolters comprising a relatively short fabric stocking, a tubular memher, to one end of which the stocking is detachably connected, a second tubular member telescopically engaged with said first member, a laterally disposed flange carried by the latter, a depending collar connected with said flange and surrounding and spaced from said second named tubular member, packing arsprings serving also to hold the second 7 I named tubular member in tight engagement with said packing'and serving to hold said stocking taut.

In testimony whereof I have hereunto set my hand. Y

. CLARENCE ELMER MINER. 

